110 CRUCIFERAE. {Vou. IL. 
2. THELYPODIUM Endl. Gen. 876. 1839. 
[PacHypPopiuM Nutt. 1838. Not Lindl. 1830.] 
Erect glabrate biennial or perennial herbs, with simple entire toothed or pinnatifid leaves, 
and racemose purplish or white flowers. Siliques nearly terete, linear, with a short stipe in 
some species; valves 1-nerved, dehiscent; style short; stigma nearly entire. Seeds in 1 row 
in each cell of the pod, oblong, marginless; cotyledons obliquely incumbent. [Greek, 
female-stalk, from the stiped ovary. ] 
A genus of about 18 species, natives of North Amer- 
ica, All but the following occur only in the western 
part of the continent. 
1. Thelypodium integrifolium (Nutt. ) 
Endl. Entire-leaved Thelypodium. 
(Fig. 1682.) 
Pachypodium integrifolium Nutt.; T. & G. Fl. N. 
A. 1:96. 1838. 
Thelypodium integrifolium Endl.; Walp. Rep. 1: 
172. 1842. 
Glabrous, erect, branching above, 3°-6° high. 
Leaves entire, thickish, the basal and lower ones 
petioled, narrowly oval or oblong, 2’-4’ long, the 
upper or sometimes nearly all the cauline ones 
sessile, linear, lanceolate or oblong-lanceolate, 
acute or acuminate; flowers pink, in short dense 
racemes; pedicels slender, spreading, 2’’-4’’ long; 
petals obovate or spatulate, long-clawed; pods 
narrowly linear, about 1’ long and %4’’ wide; stipe 
very short; style slender, nearly 1’’ long. 
Nebraska and Wyoming to Oregon, Utah and New 
Mexico. July-Sept. 
3. SUBULARIA L. Sp. Pl. 642. 1753. 
Small annual aquatic submersed herbs, with basal lin- 
ear subulate leaves, and minute racemose white flowers. 
Silicles short-stipitate, oblong or elliptic, the valves con- 
vex, ribbed on the back. Stigma sessile, entire. Seeds 
few, in 2 rows in each cell, marginless. Cotyledons in- 
cumbent, curved above their base. [Latin awl, from the 
awl-shaped leaves. ] 
A monotypic genus of the northern hemisphere. 
1. Subularia aquatica L. Water Awlwort. 
(Fig. 1683.) 
Subularia aquatica I, Sp. Pl. 642. 1753. : 
Tufted, glabrous, 1/-4’ high, growing on the bottoms of 
lakes in shallow water. Flowering scape simple, lateral; 
leaves nearly cylindric, 6’/-15’’ long; flowers few, race- 
mose, distant; pedicels slender, 1//-3’’ long in fruit; petals 
white, minute; pods oblong or globose, 1/’-134’" long; 
seeds several in each cell; style none. 
In clear, cold lakes, Newfoundland to British Columbia, 
Maine, New Hampshire and Ontario, south in the Rocky 
Mountains to Wyoming, and to California. Also in Europe 
and Siberia. June-Sept. 
4. LEPIDIUM L. Sp. Pl. 643. 1753. 
Erect, or rarely diffuse, glabrous or pubescent herbs, with pinnatifid lobed or entire leaves 
and racemose white or whitish flowers. Stamens often fewer than 6. Petals short, some- 
times none. Silicles oblong or obovate, flattened contrary to the partition, winged or wing- 
less; valves keeled, dehiscent. Seeds solitary in each cell, flattened; cotyledons incumbent 
or rarely accumbent. [Greek, a little scale, from the flat scale-like pods. ] 
About 65 species, widely distributed. In addition to the following, about 16 others occur in 
western North America. Called indifferently Cress, Pepperwort or Pepper-grass. 
Stem-leaves clasping by an auriculate base. 
Pods broadly ovate, winged. 1. L. campestre. 
Pods wingless, broader than long. 2. L. Draba. 
Stem-leaves petioled or sessile, not clasping. 
Pods and seeds entirely wingless; petals none. 3. L. ruderale. 
